The incumbent leads former Rep. Joe Sestak by 4 percentage points in a new poll.
Rep. Dina Titus will forgo a run, clearing a path for Harry Reid’s handpicked successor.
Swing district Rep. Ann Kirkpatrick could face incumbent Sen. John McCain in the general.
Van Hollen worked with seven other Democrats to build the case he could defeat Steny Hoyer.
Julian Hattem 05/19/15 12:09 PM EDT
The strange bedfellows are pressuring the Senate to reform the NSA.
Rep. Adam Schiff declined a run at outgoing Sen. Barbara Boxer's seat.
Sanchez apologized after imitating a Native American "war cry."
VIDEO | "I said something offensive," Rep. Loretta Sanchez (D-Calif.) said.
Jonathan Easley 05/16/15 04:16 PM EDT
His decision likely sets up a rematch with Sen. Ron Johnson in 2016.